2010-05-25 20:13:01 UTC
and I have observed on my computer, that DPC starts with a CPU load of 35-50%
and after 2 minutes the CPU load decreases down to 0%.
However, sometimes the DPC pulses in the following way:
* 5 seconds no CPU load
* 3 seconds 20-30% CPU load.
I am not sure what could cause such an effect and until now I have tried
different configurations without a hint. However, the USB host controller
should not be a bottleneck. I have a load of less than 5% of total USB
* Windows 7 64bit
* HP xw4600 workstation
* up to 6 USB audio devices connected over a hub
Can anyone gives me hint?